Safety razor



Dec. 20, 1927. 1,653,105

J. L. KING SAFETY RAZOR Filed Deo. 6. 1924 61H01 new Patented Dec. 20,1827.

UNHTED STATES JOHN L. KING, OF BALTIMORE, MARYLAND.

SAFETY RAZOR.

l Application led December 6, 1924. Serial No. 754,401.

This invention relates to safety razors and more particularly to such adevice employing a blade adapted to be reciprocated in a line parallelto its cutting edge to provide a shearing cut.

An important-object of the invention is to provide a device of the abovementioned character having novel means for recipro` eating the bladeAwhereby the latter is adapted to cut with a shearing motion.

A further object of the invention is to provide a roller adapted tocontact with the skin to be revolved thereby to inlp'art a shearingaction to the blade, novel means being provided for rotatably supportingthe roller.

A further object of the invention is'to provide means for regulating thecut of the blade by means of a guard adjustable toward and away from thecutting edge of the blade.

Other obj ects and advantages of the invention will be apparent duringthe course of the following description.

In the drawings I have shown several embodiments of the invention. Inthis show- 111g,

Figure 1 is a front elevation of the device,

Figure 2 is a side elevation,

Figure 3 is an enlarged side elevation of the frame and associatedelements,

Figure 4 is a plan view of the device open with the blade removed,

Figure 5 is a section taken on line 5 5 of Figure 1,

Figure 6 is a detail perspective of the blade and operating levertherefor,

Figure 7 is a detail perspective of a portion of the frame andassociated elements,

Figure 8 is a detail perspective of the guard, and

Fi re 9 is a detail perspective of a modified orm of guard.

Referring to the drawings the numeral 10 .designates a frame as a wholewhich is generally rectangular in shape and is provided with a rearwardextension 11 having a depressed internally screw-threaded portion 12. Ahandle 13 has a portion adjacent its upper end threaded as at 14 forreception within the screw-threaded opening in the frame as will beobvious. The handle 13 is provided at its upper end with a substantiallyaxial extension 15 preferably formed as a screw driver for a purpose tobe described.

edge with preferably integral upstanding arms 16 each of which isprovided with a rearwardly opening slot 17. A roller 18 is arrangedbetween the arms 16 as clearly shown. The roller 18 is preferablycorrugated to form an eiiicient rolling contact with the skin of theuser and each end 0f the roller is provided with an axial stub shaft 19adapted to be arranged in the slot 17 and corresponding in ydiameterthereto. The roller 18 is provided preferably centrally thereof with aserpentine groove 20. An operating lever 21 is pivotally connected as at22 with the rearward extension 11 of the frame and is providedintermediate its ends with a pin 23 upstanding therefrom' and arrangedwithin the groove 20. The forward end 24 of the lever 21 is adapted toengage a razor blade to impart a reciprocating motion thereto in amanner to be described.

The uppery face 25 of the frame 10 is pro-` vided with small upstandingknobs 26 upon which the blade is adapted torest as will become obvious.The central portions 27 of the framelO are depressed between theprojections 26 as clearly shown in Figures 4 and 5. A pair of elongatedalined projections 28 are arranged on the frame 10 near opposite edgesof the upper face thereof as clearly shown in Figure 4. The numeral 29designates a razor blade having a forward cutting edge 30.- The rearedge of the blade is provided with a cutout portion 31 in which theforward end 24 of the lever is adapted to be arranged when the blade isin position. The blade is adapted to be arranged on the upper face ofthe frame 10 and is pro-vided in opposite ends with slots 32 adapted toreceive the elongated depressions 28. When the blade is in position itThe frame 10 is provided adjacent its rear` will be obvious that it isadapted to be sup e ported by the projections 26.

-A retaining clamp 33 is adapted to enga-ge the upper face of the razorbladel to maintain it in position. The retaining member is provided atits rear edge with arms 34 having forwardly opening slots 35 therein.These slots are equal in width to the diameter of the stub shafts 19 andare adapted be obvious that the blade is engaged on opposite sides b theprojections 26 and 36 and is adapte 'to slide therebetween. The

j retaining member 33 is further provided with a central lug 37 which isadapted to be arranged in the central slot 38 in the razor blade. Asshown in Figure 4, the retaining member 33 is provided in opposite endswith cutout portions 37 adapted to receive the projections 28 when theretaining member is in closed osition. Lips 39 extend from opposite endgofthe retaining member to facilitate the opening thereof when it isdesired to remove or replace the blade.

Referring to Figures 3 and 7, the numeral 39 designates as a whole aresilient member having its forward end arranged beneath the frame 10and adapted to be secured thereto by screws 40 or the like. The member39 is provided adjacent each end of its rear edge with a pair ofresilient arms 41 and 42. Each of the arms 42 is adapted to engage a cam43 projecting rearwardly from the retaining member 33. It will beobvious that the sprin 42 is adapted to hold the retaining mem er inengagement with the blade when the device is in position shown in Figure3 and is adapted to engage the forward portions of the arms 34 to holdthe retaining-member in open position when it is desired to remove orreplace the blades. Each of the arms 41 is arranged adjacent one of theslots 17 formed in the arms 16.

The frame 10 is provided adjacent each forward corner with an aperturedarm 44 as clearly shown in Figures 1 and 7. A guard roller 45 is arraned between the arms 44 and one end of t e roller is provided wtih alongitudinally extending eccentric pin adapted to be arranged in theopening in one of the arms 44. The opposite end of the roller isprovided with an eccentric opening 47 arranged in alinement with the pin46. A screw 48 is adapted to be arranged in the opening in the oppositearm 44 and to engage in the opening 47. In Figure 8 of the drawings, Ihave shown a substantially cylindrical guard but the latter need not becircular in cross section. In Figure 9 I have illustrated a modifiedform of guard. As shown I provide in this form a guard 49 which issubstantially triangular in cross section and is also provided with aneccentricppin 50 adapted to be arranged in the opening in one of thearms 44. The opposite Vend of the guard 49 is provided with an o ening(not shown) similar to the opening 4 to receive the pin 48.

The operation of the device is as follows: The blade 1s arranged inposition on the frame wlth the projections 28 engaging the lcauses thelatter to revolve.

slots 32. The retaining member 33 is then closed with the pin 37engaging in the central slot 38. If desired the guard maybe adjustedaccording to the closeness of the shave desired by individual users. Thehandle may be unscrewed from the frame and the screw driver end 15thereof employed for loosening the screw 48. The guard then may berevolved to any desired position and the screw 48 tightened. The handleis then replaced in position as shown in Figure 5. l/Vhen in use therazor is moved in contact with the skin in the usual manner and theengagement of the roller 18 against the skin The engagement of the pin23 in the serpentine groove 20 causes the forward end 24 of the lever 21to oscillate. Since the forward end of the lever is engaged in the slotor cutout portion 31 it will be obvious that the blade will bereeiprocated in a line parallel to its cuttingY edge thus causing ashearing action of the blade. The central portion of the frame isdepressed to prevent any binding action between the blade and frame ifthe former becomes warped or bent in any manner. The projections 26 and36 are adapted to support the blade and these projections are preferablyprovided with smooth polished faces to reduce the friction between theprojections and the blade so that the latter may reciprocate freely.

With the construction shown and described it has been found that thevarious structural elements may be easily and quickly assembled anddisassembled. In assembling the device the roller 18 is first arrangedwith the stub shafts 19 above and between the arms 16 and springs 41.The roller is then pressed downwardly forcing the springs 41 outwardlyuntil the stub shafts slide into the open ends of the slots 17. Theretaining member 33 is then arranged with the slot 35 projecting insubstantially the opposite direction to that shown in Figure 3 and isthen moved rearwardly to place the stub shaft 19 within the slot 35.With the stub shafts in the deeper portions of the slots 35, theretaining member is then. swung over to `the osition shown in Figure 3,the cam portions 43 forcing the springs 42 rearwardly to permit theswinging movement of the retaining member. It will be obvious that thepressure in the s rings 42 projects the retaining member 'orwardly sothat the shaft 19 will be arranged in the deepery portions of the slots35 and this forward pressurealso maintains the shaft 19 in the Vdeeperportions of the grooves 17 Thus it will be seen that the stub shaftswill be securely held in position and yet ermitted to revolve freely.

It is to be un erstood that the forms of my invention herewith shown anddescribed are to rbe taken as preferred examples of- CII the same andthat various changes in the shape, size and arrangement of parts may beresorted to without departing from the spirit of the invention or thescope of the subjoined claims. Y

Having described my invention, I claim:

l. A safety razor comprising a frame having a pair of arms provided withalined slots, a roller mounted between said arms and provided at itsends With stub shafts arranged in said slots, means for retaining saidstub .shaftsin said slots, a blade arranged on said frame, andmeansconnected between said roller and said blade for reciprocating thelatter in a line parallel to its cutting edge when said roller isrevolved.

2. A device constructed in accordance with claim 1 wherein saidretaining means for the stub shafts comprises springs carried by saidframe and having free ends arranged adjacent the open ends of saidslots. Y

Y3. A safety razor comprising a frame provided adjacent its rear edgewith a pair of spaced upstanding arms having alined slots therein, aroller mounted between saidv arms and provided with axial stub shaftsprojecting through said slots, a retaining member arranged over saidframe and provided with arms having apertures receiving said stubshafts, a blade arranged between said frame and said retaining member,connections between said roller and said blade for reciprocating thelatter in a line parallel to its cutting edge when said roller isrevolved, and resilient means engaging said retaining member and adaptedto maintain said stub shafts in said slots.

4. A device constructed in accordance with claim 3 wherein saidresilient means comprises a spring carried by said frame and havingportions engaging against the arms of said retaining member opposite theopen ends of said slot.

5. A safety razor comprising a frame having a pair of spaced upstandingarms adjacent its rear edge provided with open ended slots, a memberarranged between said arms and provided with stub. shafts projectingthrough said slots, a blade arranged on said frame, a retaining membernormally arranged over said blade, said retaining member havingupstanding arms arranged adjacent the arms of said frame and providedwith open ended slots extending in a different direction from said iirstnamed slots and receiving portions of said stub shafts. and meanscarried by said frame and engaging said retaining member for retainingsaid stub shafts in the inner ends of said` slots.

6. A device constructed in accordance with claim 5 wherein the means forretaining the stub shafts in the inner ends of said slots comprises amember secured to said frame and provided with a pair of resilient armseach contacting with one of the arms of said retaining member oppositethe open end of the slot therein.

7. A device constructed in accordance with claim 5 wherein the means forretaining the stub shafts in the inner ends of said slots comprises amember secured to said fra-me and provided with ya pair of resilientarms eac-h contacting with one of the arms of said retaining member.oppositeY the open end of the slot therein, said last named memberbeing further provided lwith .a pair of resilient arms eacharranged adjacentthe open end of the slot in one end ofl each arm of said frame. v

8. A safety razor comprising a frame having a pair of spaced upstandingarms adjacent its rear edge provided with alined rearwardly openingslots, a member arranged between said arms and provided with stub shaftsproje ting through said slots, a blade arranged on said frame, aretaining member normally arranged over said blade, said retainingmember having upstanding arms arranged adjacent the arms of said frameand provided with forwardly opening slots receiving portions of saidstub shafts, and a spring member secured to said frame and providedadjacent each end with a pair of resilient arms, one resilient arm ofeach pair being arranged adjacent the open ends of the slots in the armsof said frame, the other of said resilient arms bearing against the armsof said retaining member rearwardly thereof.

9. A device constructed in accordance with claim 8 wherein the memberarranged between said arms comprises a roller, and means connectedbetween said roller and said blade for reciprocating the latter in aline parallel to its cutting edge when said roller is revolved.

10. A device constructed, in accordance with claim 8 wherein the memberarranged between said arms includes a roller portion provided in itssurface with a continuous serpentine groove, and operatin meansoonnected between said blade an said groove for reciprocating said bladein a line paralle l to its cutting edge when said roller is revolved.

11. A device constructed in accordance with claim 8 wherein the memberarranged betweenV said arms includes a roller portion provided in itssurface with a continuous serpentine groove, and a lever pivotallyconnected intermediate its ends to said frame and provided at one endwith a portion arranged in said groove, the opposite end of said leverengaging a portion of said blade to reciprocate it in a line parallel toits cutting edge when said roller is revolved.

l2. A safety razor com rising a frame, a retaining member arrange oversaid frame,

the adjacent faces of said frame and said retaining member beingprovided with a plurality of projections extending beyond the faces ofthe frame and retaining member, a blade arranged between said frame andsaid retaining member and resting upon the projections thereon, andmeans for reciprocating said blade in a line parallel to its cuttingedge.

13. A device constructed in accordance with claim l2 provided with apair of guide members arranged in a line parallel to the cutting edge ofsaid blade, saidblade being d rovided with slots to receive said Huidethe cutting edge of said blade, and means or securing said guard inadjusted positions.

15. A safety razor comprising a frame provided at opposite ends of itsforward edge with forwardly projecting arms provided with alinedopenings, a blade arranged on said frame and having its cutting edgearranged adjacent the forward edge thereof, and a guard mounted betweensaid arms, said guard having eccentric alined projections at its endsarranged in said openings.

16. A safety razor comprising a frame provided at opposite ends of itsforward edge with forwardly projecting arms'provided with alinedopenings, a blade arranged on said frame and having its eutting'edgearranged adjacent the forward edge thereof, a cylindrical guard arrangedparallel to the cutting edge of the blade and provided at one end withan eccentric pin arranged in the opening in one of said arms, theopposite end of said guard being provided with a threaded opening inalinement with said pin, and a screw mounted in the opening in the otherof said arms and adapted to engage in the opening in said guard.

In testimony whereof I aflix my slgnature.

JOHN L. KING.

